Band jar-closure



Patented May 3, 1921.

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JAR CLOSURE.

FILED MAR. 15, 1 9 1 9.

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APPLICATION VII!!! viii!!! IIIII'IIIIIIIIII W lli IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII(IIIIIIIIIII'IIIIA nun. llQIIllll1|lHIIIUIIIIIIIIIIIIIIIII UNITED STATES PATENT OFFICE.

CHARLES HAMMER, OF QUEENS, NEW YORK, ASSIGNOR T0 AMERICAN METAL CAP COMPANY,

OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

BAND JAR-CLOSURE.

Specification of Letters Iatent.

Patented May 3, 1921 T 0 all whom it may concern:

Be it known that I, CHARLES HAMMER, a citizen of the United States, residin at Queens, in the county of Queens and tate of New York, have invented certain new and useful Improvements in Band Jar-Closures, of which the following is a specification.

This invention relates to closures for containers, particularly to the wide-mouth form of containers such as glass jars designed to be filled with preserves and food articles of various kinds.

The object of the present invention is to provide a closure for this purpose, in which a sealing cap of a very simple nature 1s provided with a flange that serves to engage the outer edge of a gasket ring, adapted to cooperate with an outer sealing ledge or shoulder on the jar; in combination with which is employed a sealing band that will serve to retain this closure under compression on the jar, yet will provide for its easy removal, by merely withdrawing the band.

In the accompanying drawing showing one embodiment of my invention, Figure 1 shows in side elevation, partly in section, the upper portion of the closed jar.

Fig. 2 is a partial section enlarged, showing the closure as first applied.

3 is a view similar to Fig. 2, showing the closure sealed under compression.

Fig. 4 is a fragmentary sectional view of the closure member or cap.

Fig. 5 is a similar view of the cap before securing the asket or washer in position.

As set forth herein, the closure comprises a top member or cap, having a flat top 6, and a downwardly extending flange 7, shown as substantially vertical or cylindrial. A suitable fiat ring gasket or washer 3 is inserted in the cap to engage its top wall at the outer edge, in contact with the flange 7. The lower end portion 9 of the flange is bent inwardly, as shown in Fig. 5, and then upwardly as at 10, to engage the gasket, and cause a portion thereof to enter the angle of the flange, as shown.

This closure is designed to fit on a ar 11, having a neck portion 12 that is offset to form a shoulder 13. The outer diameter of the neck portion 12 at the top is slightly less than the inner diameter of the cap at the bent flange portion 10. When the cap is placed on the jar, as indicated in Fig. 2, the gasket only will engage the jar, and the flange portion will be olfset therefrom.

To secure the cap on the ar, I provide a sealing band 14, provided with an inwardly extending flange 15 at the bottom, that when applied outside of the jar and cap will engage outside of the flange 7, and the margin of the top 6 of the cap, as shown in Fig.

-2. This band extends downwardly a short distance beyond the sealing shoulder 13 of the jar, as shown in Fig. 2. Preferably pressure is applied on top of the cap at the margins, to effect a tight seal, and cause the gasket to enter any irregularities or cavities in the jar edge. While under this compression the lower edge of the band is bent inwardly to engage the shoulder 13, as shown in Fig. 3. By this means the band will securely hold the cap under compression on the jar. The cap preferably has its ends slightly overlapping and may be provided with a tongue 16. To open the jar it is only necessary to grasp the tongue and pull outwardly on the band, that will loosen and release the cap for removal.

What I claim as my invention is The combination with a jar having a flat top with the outer wall extending abruptly downward and then inward to form a seal ing shoulder, of a closure comprising a top fiat at the outer portion and an annular flange that extends abruptly downward with the lower edge or margin bent abruptly upward on the inside to form a wedgeshaped channel open at its upper part below the top wall of the closure, a flat ring gasket of compressible material having its outer portion tightly compressed in and filling said wedge channel and extending up to the top of the closure inside of the flange and horizontally inward against the under side of the closure top wall, and a sealing ring having an upper flange portion engaging the top of the closure at the flange margin, with the lower margin of the band bent inwardly under the jar sealing shoulder to retain the closure in sealing position with the gasket under compression.

Signed at New York city, N. Y. on March 13th, 1919.

CHARLES HAMMER. 

